 | Home > Puma (Tdci) > Turning off TC |
 
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| DSC-off Member Since: 16 Oct 2014 Location: North East Posts: 1410   
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Yes, DSC-off, when I want to play with the Defender Offroad
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14th Aug 2016 8:52pm |
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| Callum_P Member Since: 08 Aug 2016 Location: Shetland Posts: 11
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Traction control is beneficial off road, 2nd gear low range and about 2000-2500rpm and it works brilliantly.
I've done two official land rover experience days in a defender with traction control one in Devon the other in Perthshire. They demonstrate how effective it is they get you to lock the diff and go into first low and drive up a steep hill on to some rollers first the front wheel goes on but when the second rear wheel goes on the vehicle stops as the all the drive goes to the front and rear wheel on the rollers. The instructor then told me to reverse but this time second gear low and a bit of power as T/C needs a slightly faster speed to work effectively and with the ABS pump producing a farting sound all the way up the abs brakes the spinning wheels and moved me forward as by braking the spinning wheels drive is transferred to the wheels with grip albeit in a very undignified fashion. Now when I bought my 2012 defender I made sure it didn't have abs or traction control as I have replaced the front diff in my discovery twice now as what is happening when T/C is active, is you are shock loading your diffs when they are highly loaded and this causes them to fail spectacularly. The other reason is I became fed up with the three amigos!! I'm looking to fit air lockers eventually. |
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15th Aug 2016 9:50am |
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| NinetyTD4 Member Since: 22 Apr 2011 Location: North Posts: 397  
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If you have a Defender with DSC/TC/ABS you may try, as you do have a switch to disable (kind of, it does not switch off completely). If you have a Defender with TC/ABS fitted, follow the discussion around the tinkering pull-fuse method. In the latter case I would advice not to do so, as the electronics was not meant to be used like that and the car can get in critical situations as it was designed to have it enabled (and no, a TC/ABS equipped Defender does not behave like a non-fitted one when the fuse is pulled, so whenever you do that, do it on private ground, not on public roads). Never forget: cars have owner, Landrover have field service personnel.
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15th Aug 2016 4:27pm |
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| Pinky Member Since: 09 Jun 2016 Location: England Posts: 208  
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You don't need to pull the fuse. See the earlier post with the method.
Hence the original question |
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15th Aug 2016 4:43pm |
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| NinetyTD4 Member Since: 22 Apr 2011 Location: North Posts: 397
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I read of this method, but to which built years/software versions does it apply? I tried it on mine several time, checked with the shop and it is not working. Should I worry? Never forget: cars have owner, Landrover have field service personnel. |
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16th Aug 2016 7:15am |
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| Pinky Member Since: 09 Jun 2016 Location: England Posts: 208
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Not sure what you mean by checked with the shop! This is like the windscreen wiper relay trick, it only lasts until you turn the ignition off. Once you turn on again you have to set it again  |
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17th Aug 2016 1:05pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8033  
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only on pre11my vehicles which had siemes system to control it. the bosch system fitted from 5 jul 10 doesnt turn off like this Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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17th Aug 2016 4:07pm |
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| Yannis Member Since: 02 Feb 2015 Location: Oxfordshire / Milan Posts: 408 
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OK, so we know the 10 pedal pushes within 10 seconds doesn't work on anything later than my12.
Which of the following fuses is it best to pull to disable TC/ABS.... on private roads of course! my15  Click image to enlarge |
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27th Mar 2017 4:51pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720 
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It's worth noting that DSC and TC are different things, although they are linked.
DSC - Dynamic Stability control, is designed to try and prevent the car from spinning out of control and go where you point it. So if you go around corner too fast, whether it's snowy or a dry summers day, the DSC will operated the brakes on different wheels to try and keep the car going around the corner rather than sliding out of control. This isn't always good when you're driving in off road conditions as it can get confused when the wheels are slipping and it'll be applying the brakes in apparently random patterns as it'll think the car is out of control. The more modern cars with Terrain response, basically disable DSC when you set it to mud and ruts. TC - Traction Control, is designed to try and maximise traction, a single wheel spinning in mud or thin air will simply steal the traction from the remaining wheels. Traction control applies the brake on this spinning wheel to allow the diffs to transfer traction to the remaining wheels. The system can modify this as each wheel changes to a different surface so that the wheels with the most grip get sent the most tractive effort. I'd agree the problem you had with your Jaguar was most likely down to the tyres, wide low profile summer tyres are next to useless in snow, added to the fact i expect the Jaguar was also rear wheel drive, so there is no weight over the drive axle to push the tyres into the surface. It's the same reason BMW's become the 'Ultimate sliding machine' at the first fall of a snowflake. Tall narrow all season tyres on a 4x4 are a completely different animal. |
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27th Mar 2017 6:24pm |
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| diduan Member Since: 13 Oct 2016 Location: Central Balkan Posts: 260 
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Trying to keep it short:
TC is rubbish on ice and snow. It kicks in when you drive at high speed when you cross snow/ice areas than tarmac than ice etc. This feels brutal to me, as TC is not "polite" when it kicks the brakes. I had an output shaft failure this winter, so i changed the center diff with an Ashcroft torsen diff. TC is much much quieter now, as my car does not loose traction that easy any more. This was a side effect for me, i was surprised how good it worked on snow and ice. I changed the center diff because i was doing work on the output shaft and decided to eliminate another weak link (LR center diff). TC is very helpful if it is dry though, for example cross axle. Defender 110 SW MY2011 2.4tdci decat, no EGR Jeep Wrangler YJ 1990 4.0. Front 78' Dana 60, Rear CUCV 14 bolt |
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27th Mar 2017 7:13pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720
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Surely that's just the TC telling you you're driving too fast for the conditions? If you have one wheel on a patch of sheet ice and three in loose snow TC will stop the wheel on ice from spinning and allow the other 3 to get the car moving. |
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27th Mar 2017 9:17pm |
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